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FSL DDR: Convert MPC8555ADS to new DDR code.

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Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Jon Loeliger 2008-03-18 11:12:42 -05:00 committed by Kumar Gala
parent 8b625114e8
commit 2b40edb10d
4 changed files with 105 additions and 18 deletions
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1
board/freescale/mpc8555cds/Makefile
View File

@ -27,6 +27,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
COBJS-y += $(BOARD).o
COBJS-y += ddr.o
COBJS-y += law.o
COBJS-y += tlb.o

79
board/freescale/mpc8555cds/ddr.c Normal file
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@ -0,0 +1,79 @@
/*
* Copyright 2008 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Version 2 as published by the Free Software Foundation.
*/
#include <common.h>
#include <i2c.h>
#include <asm/fsl_ddr_sdram.h>
static void
get_spd(ddr1_spd_eeprom_t *spd, unsigned char i2c_address)
{
i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr1_spd_eeprom_t));
}
unsigned int fsl_ddr_get_mem_data_rate(void)
{
return get_ddr_freq(0);
}
void fsl_ddr_get_spd(ddr1_spd_eeprom_t *ctrl_dimms_spd,
unsigned int ctrl_num)
{
unsigned int i;
unsigned int i2c_address = 0;
for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
if (ctrl_num == 0 && i == 0) {
i2c_address = SPD_EEPROM_ADDRESS;
}
get_spd(&(ctrl_dimms_spd[i]), i2c_address);
}
}
void fsl_ddr_board_options(memctl_options_t *popts, unsigned int ctrl_num)
{
/*
* Factors to consider for clock adjust:
* - number of chips on bus
* - position of slot
* - DDR1 vs. DDR2?
* - ???
*
* This needs to be determined on a board-by-board basis.
* 0110 3/4 cycle late
* 0111 7/8 cycle late
*/
popts->clk_adjust = 6;
/*
* Factors to consider for CPO:
* - frequency
* - ddr1 vs. ddr2
*/
popts->cpo_override = 0;
/*
* Factors to consider for write data delay:
* - number of DIMMs
*
* 1 = 1/4 clock delay
* 2 = 1/2 clock delay
* 3 = 3/4 clock delay
* 4 = 1 clock delay
* 5 = 5/4 clock delay
* 6 = 3/2 clock delay
*/
popts->write_data_delay = 3;
/*
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
*/
popts->half_strength_driver_enable = 0;
}

8
board/freescale/mpc8555cds/mpc8555cds.c
View File

@ -23,7 +23,9 @@
#include <common.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_ddr_sdram.h>
#include <ioports.h>
#include <spd_sdram.h>
#include <libfdt.h>
@ -261,7 +263,10 @@ initdram(int board_type)
udelay(200);
}
#endif
dram_size = spd_sdram();
dram_size = fsl_ddr_sdram();
dram_size = setup_ddr_tlbs(dram_size / 0x100000);
dram_size *= 0x100000;
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
/*
@ -269,6 +274,7 @@ initdram(int board_type)
*/
ddr_enable_ecc(dram_size);
#endif
/*
* SDRAM Initialization
*/

35
include/configs/MPC8555CDS.h
View File

@ -40,13 +40,6 @@
#define CONFIG_PCI
#define CONFIG_TSEC_ENET /* tsec ethernet support */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/
#define CONFIG_DDR_DLL /* possible DLL fix needed */
#undef CONFIG_DDR_2T_TIMING /* Sets the 2T timing bit */
#define CONFIG_DDR_ECC /* only for ECC DDR module */
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
#define CONFIG_FSL_LAW 1 /* Use common FSL init code */
#define CONFIG_FSL_VIA
@ -59,8 +52,6 @@
*/
#define CONFIG_ASSUME_AMD_FLASH
#define MPC85xx_DDR_SDRAM_CLK_CNTL /* 85xx has clock control reg */
#ifndef __ASSEMBLY__
extern unsigned long get_clock_freq(void);
#endif
@ -85,24 +76,31 @@ extern unsigned long get_clock_freq(void);
#define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */
#define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */
/*
* DDR Setup
*/
/* DDR Setup */
#define CONFIG_FSL_DDR1
#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for DDR setup*/
#define CONFIG_DDR_SPD
#undef CONFIG_FSL_DDR_INTERACTIVE
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
#define CFG_DDR_SDRAM_BASE 0x00000000 /* DDR is system memory*/
#define CFG_SDRAM_BASE CFG_DDR_SDRAM_BASE
#define SPD_EEPROM_ADDRESS 0x51 /* DDR DIMM */
#define CONFIG_NUM_DDR_CONTROLLERS 1
#define CONFIG_DIMM_SLOTS_PER_CTLR 1
#define CONFIG_CHIP_SELECTS_PER_CTRL (2 * CONFIG_DIMM_SLOTS_PER_CTLR)
/*
* Make sure required options are set
*/
/* I2C addresses of SPD EEPROMs */
#define SPD_EEPROM_ADDRESS 0x51 /* CTLR 0 DIMM 0 */
/* Make sure required options are set */
#ifndef CONFIG_SPD_EEPROM
#error ("CONFIG_SPD_EEPROM is required by MPC85555CDS")
#endif
#undef CONFIG_CLOCKS_IN_MHZ
/*
* Local Bus Definitions
*/
@ -317,6 +315,9 @@ extern unsigned long get_clock_freq(void);
#define CONFIG_OF_BOARD_SETUP 1
#define CONFIG_OF_STDOUT_VIA_ALIAS 1
#define CFG_64BIT_VSPRINTF 1
#define CFG_64BIT_STRTOUL 1
/*
* I2C
*/